Nickel Alloy 725 (N07725)
Nickel Alloys
Property Overview
Density8.5g/cm³
Elastic Modulus200GPa
Tensile Strength860MPa
Yield Strength350MPa
Brinell HardnessUnknown
Maximum Service Temperature980°C
Chemical Composition
C
0 to 0.030%
CR
19 to 22.5%
NI
55 to 59%
MO
7.0 to 9.5%
MN
0 to 0.35%
SI
0 to 0.2%
P
0 to 0.015%
S
0 to 0.010%
NB
2.8 to 4.0%
TI
1.0 to 1.7%
AL
0 to 0.35%
FE
2.3 to 15.3%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
34 %
Fatigue Strength
260 MPa
Poisson's Ratio
0.29
Reduction in Area
45 %
Shear Modulus
78 GPa
Shear Strength
580 MPa
Tensile Strength: Ultimate (UTS)
860 MPa
Tensile Strength: Yield (Proof)
350 MPa
Physical
Density
8.5 g/cm 3
Thermal
Latent Heat of Fusion
320 J/g
Maximum Temperature: Mechanical
980 °C
Melting Completion (Liquidus)
1340 °C
Melting Onset (Solidus)
1270 °C
Specific Heat Capacity
440 J/kg-K
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
23 points
Electrical
Electrical Conductivity: Equal Volume
1.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
1.6 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
240 MJ/m 3
Resilience: Unit (Modulus of Resilience)
300 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
23 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
24 points
Environmental
Base Metal Price
75 % relative
Embodied Carbon
13 kg CO 2 /kg material
Embodied Energy
190 MJ/kg
Embodied Energy
190 MJ/kg 80 x 10 3 BTU/lb
Embodied Water
270 L/kg
Embodied Water
270 L/kg 33 gal/lb
Registered Designations & Aliases
N07725Nickel Alloy 725 (N07725)
Standards
ASTM B805 ASTM B805: Standard Specification for Precipitation Hardening Nickel Alloys UNS N07716, N07725, N07773, N07776, and N09777, Bar and Wire
ASTM B805 ASTM B805: Standard Specification for Precipitation Hardening Nickel Alloys UNS N07716, N07725, N07773, N07776, and N09777, Bar and Wire Microstructure of Superalloys, Madeleine Durand-Charre, 1998